When I brought my 450 out of winter storage I took it for a spin and everything ran fine. The next day I was on my way to work and when it was warmed up it began to spit and back fire with black smoke out the exhaust. I put 10gal. of fresh gas in and a bottle of injector cleaner (sta-bil was added before storage). I took it out for a spin and after it warmed up it began to spit and backfire again but after about a mile it started running fine. I took it on a few short errands and everything worked fine but today on my way to work it it started up again. I can't wait till its time to go home and see which 450 I
get. Any ideas as to what is going on would be helpful. Thanks
I assume it's Djet??
Yes.
That a comment on the D-jet?
Have you replaced anything yet? I'd look at plugs first. How old is the fuel? Today it only lasts about 3 months before it goes off
Yeah, start with ignition. Lots of fuel is not being ignited.